I just purchased an Axis Pro 750 from Lowes. I have two questions not covered in owners manual. 1: In the glovebox there is a 12V connector, it is HOT with key off, is that for a battery maintainer to be plugged in or what is the purpose? 2: In the instrument cluster there is a digital read out for hours, miles and odometer, there is also a digital readout that is flashing, it can be adjusted and looks like 1 - 24 what is it?